Which of these BEST describes the impact the Sherman Antitrust Act (1890) had on business at the end of the 19th century?
A) It had little immediate effect because of the vague wording of key points of the law.
B) It prevented new businesses from forming because complying with the law proved too expensive.
C) It resulted in the breakup of the country's largest monopolies by the start of the 20th century.
D) It hurt small businesses most due to the increased costs of following its regulatory restrictions.